For a minute i thought that was a pirate copy because of the PBPX code (common with pirate games) but turns out that is the real code for the PS2 GT3 bundle ;p

Anyway, the error you are having is common with the GT games, GT4 has a CRC hack in there to remove the garbage, but you can get the same effect by pausing the game, going to the brightness settings and setting it to 0.

Going to move to general discussion/support for now as this isn't something that can be easily fixed per-sé, but can be worked around quite easily.